diff --git a/multidms/data.py b/multidms/data.py
index 14d767b..14a7313 100644
--- a/multidms/data.py
+++ b/multidms/data.py
@@ -481,7 +481,6 @@ def get_nis_from_site_map(site_map):
             if "weight" in condition_func_score_df.columns:
                 w[condition] = jnp.array(condition_func_score_df["weight"].values)
 
-
         df.drop(["wts", "sites", "muts"], axis=1, inplace=True)
         self._variants_df = df
         self._training_data = {"X": X, "y": y, "w": w}